Tukas, Champion Of The Valar

Trample, vigilance, haste, indestructible
Tukas, Champion Of The Valar can attack
creatures as though they were planeswalkers
(Their controllers can still block with other creatures to defend that creature)
Tukas, Champion Of The Valar can't attack
players.
As long as the total power among creatures your opponents' control is less than 15, Tukas,
Champion Of The Valar isn't a creature.